My Dad bought from the BDS the Best Practice Guidlines folder at Moy last week. He has given it to me to have a look through.
I have to say, it's a well presented document with good pictures from computer generated and camera. A detailed explanation of "What,When,Why" etc...
I will try to get one for myself, for £15 with updates posted to keep you updated and current with Best Practice, it has to be worth the money.
For those thinking of taking L1 those about to or currently undertaking L2 or indeed AW's. I personally don't think you can have too much relevant and current information.